Cleaning apparatus



Sept. 18 1923. 1,468,467

w. w. FARNSWORTH CLEANING APPARATUS Filed Oct. 31. 1921 l I I Q llx'lrli"r llj L Patented Sept. 18, 1923.

WILLIAI w. FABNSWOBTH, OF CHICAGO, ILLINOIS.

CLEANING APPARATUS Application fled October 81, 1921. Serial Ho.511,688.

To all whom it may camera:

Be it known that I, WILLIAM W. Farme- WORTH, a citizen of the UnitedStates, residingat Chicago, in the county of Cook and State of Illinois,have invented certain new and useful Improvements in Cleaning Apparatus,of which the following is a specification.

This invention cleaning apparatus relates to improvements inparticularly adapted though not necessarily limited in its use forcleaning carpets, rugs, floors, etc., and one of the objects of theinvention is to provide an improved, portable device of this characterembed in a nozzle by means of the use of whic t e dirt and foreignmatter will be dislodged from the surface and from within the body ofthe carpet by means of a pneumatic vibrator in the form of air currentsoperating in a direction substantially longitudinally of the length ofthe nozzle, and which air currents are applied to the surface forsubstantially the entire length of the nozzle.

A further object is to provide an improved nozzle having a narrow inletslot and air receiving slots defining the lateral edges of the inletslot and. receiving air from the atmosphere, the inlet, openings of theair slots being dis sed in such a ition with relation to ca other and tot e res ective slots that opposed air currents will aplied to thesurface to be cleaned and adacent the inlet slot of the nozzle, wherebythe. opposed air currents will come into contact with each other beneaththe inlet slot of the nozzle to cause a swirlin motion of the aircurrents upon the sur ace of and within the body of the carpet fordislodging and rooting out the dirt and forei matter.

To the attainment of these en s and the accomplishment of other new anduseful objects as will appear, the invention consists in the features ofnovelty in substantially the construction, combination and arrangementof the several parts, hereinafter more fully described and claimed andshownin the accompanying drawingiilludzrating this.

invention and in which- Fi re 1 is a view .partly in side elevation andpartly in section and with parts broken awa a Figure 2 is a frontelevation with parts broken away.

Figure 3 is a top plan view of a portion of the nozzle.

Figure 4 is a bottom view of the nozzle showing the direction of the aircurrents.

Referring more particularly to the drawin the numeral designates an aircir cu ation device of any desired construction but preferably is of thewell-known fan type having a discharge outlet 11 and to which outletopening is connected a bag or receptacle 12 for receivin the dust, dirtand foreign matter. All 0 these parts may be of the ordinary andwellknown construction.

The air circulation creating device is provided with an inlet opening 13and a nozzle designated generally by the reference numeral 14, isconnected with the apparatus by any suitable means and in such a mannerthat the inlet passage 15 of the nozzle will communicate with the inletopening 13 of the casing of the air circulation creating device 10.

This passage 15 is-provided with an inlet opening 16 referably in theform of a narrow slot w ich extends lengthwise of and for substantiallythe entire length of the nozzle 14.

A portion of the nozzle adjacent the lower end thereof or the end whichstands ad; went the surface to be cleaned is preferab y enlarged so asto form two passages 17 and 18 on opposite sides of the passage 15, thepassage. 17 being provided with a discharge outlet opening 19 and thepassage 18 is provided with a discharge outlet opening 20. The loweredges of the walls 21 and 22 of the inlet passage 15 of the nozzle 14terminate short of the lower edges of the outer walls 2324 of therespective outlet 0 enings 19 and 20 so that when the edges 0 the walls23 and 24 contact with the surface to be cleaned, the lower edges of thewalls 21 and 22 will be spaced above such surface. With this arrangementthe pile of the ca et Wlll be permitted to stand uprightly w 'le thelower edges of the walls 23 and 24 will depress the adjacent portions ofthe pile and thereby permit the air currents to be directed into the ileof the car at.

' The lower ed geS 25-26 0 the respective walls 21 an'd 22 may be of anydesired width so as to form laterally extended surfaces above the pileof the carpet or surface to be cleaned for the purpose of holding theair currents against the surface. These surfaces 25 and 26 also serve asa means for causing the air currents to be compressed in a measure asthey pass through the carpet beneath the surfaces 25 and 26, therebyinsurin a full force .of operation against the sur ace and within thebody of the carpet.

The inlet opening 27 of the passage 17 has communication with theatmosphere and this opening 27 is offset with respect to the outletopening of the pass 15 1n a direction lengthwise of the nozz e and ispreferably arranged adjacent one end of the nozzle, the upper wall 28 ofthe passage 17 inclining downwardly from the inlet opening 27 in adirection of and terminating adjacent the opposite end of the nozzle sothat the air currents which are drawn in the opening 27 will bedistributed substantially equal substantially throughout the entirelength of the nozzle. The ofl'setting of the inlet opening 17 withrespect to the passage 15 also serves as a means for causing the aircurrents which are admitted into the passage 17 to flow in a directionsubstantially lon itudinally of the length of the nozzle and will bedelivered from the passage 17 through the outlet 19 beneath the surface25 of the wall 21 with an abrupt change of direction of flow therebycausing a swirling action of the air against the surface.

The passage 18 arranged on the opposite side of the inlet opening 16 ofthe passage 17 is itself provided with an inlet 0 ning 29 similar to theinlet opening 27. T is inlet opening 29 is referably arranged adjacentthe endof t e nozzle opposite to the end adjacent which the inlet openin27 is arranged and the u per wall 30 of t e passage 18 is also inc ineddownwardly from the inlet opening 29 to the end of the nozzle for thesame purpose that the wall 18 of the passage 17 is inclined.

It will be manifest that the inlet openings 27 and 29 being offset withrespect to each other and inasmuch as the upper walls 28 and 30respectively of the passages 17 and 18 incline in directions opposite toeach other, that air currents bein admitted into the passages 27 and 29will dow inop osite directions throu h the passages. As t e air flows infrom t e atmosphere through the inlet opening 29 into the passage 18 itwill pass through the outlet 0 ning 2O beneath the surface 26 of the wall 22 sage 15 and the inclined wall 30 will cause the incomin aircurrents to 0 rate upon the surface t roughout substantially the entirelength of the nozzle.

The offsetting of the opening 29 of the passage 18 with respect to theoutlet opening 15 of the nozzle will cause the air currents to changetheir direction of flow as they pass from beneath the surface 26 andthereby operate upon the surface with a swirling into the pasmovement ina manner similar to the operation of the air currents from the passage17 upon the surface to be cleaned.

It will be manifest that the inlet openings 2729 are arra d adjacent oposite ends of the nozzle an on opposite si es of the outlet openin ofthe passage 15, and that the upper wa ls 28 and 30 respectively of thepassages 17 and- 18 incline downwardly from the opposite ends of thenozzle and in opposite directions, so that the air currents entering theinlet openings 27-29 will flow in opposite directions, and as these aircurrents pass beneath the respective surfaces 2526 of the walls 2122their course of flow will be abruptly changed as they enter the inlet 16of the passage 15. Inasmuch as these incoming air currents are fiowin inopposite directions and as they are de ivered simultaneously lnto theinlet opening of the passage 15 they will clash or come in contact withcar other in such a manner as to increase the swirling movement of theaction of the air currents upon the surface beneath the inlet opening16, and cause a violent agitation of the air currents upon the surfaceto be cleaned beneath the inlet opening 16, thereby operating as apneumatic vibrator or a itator upon the surface being cleaned, wit theresult that the air currents will root down into the body of the carpetand dislodge all dirt and foreign matter held therein.

The dust and dirt will then be caught up by the suction created in thepassage 15 of the nozzle 14 and will be delivered into the inlet openingof the air circulation creating device 10 from whence they will bedelivcred through the outlet opening 11 into the im urities collectingrece tacle or bag 12.

n the present exempli cation of this invention and as shown in thedrawings two air assages are arran d one on each side of t e inlet openi16 ut it is obvious that either one or the ot er of these passages maybe omitted and the a paratus will operate efliciently with one 0 theseassages.

-While the preferred form 0 the invention has been herein shown anddescribed it is to be understood that various chan may be made in thedetails of construction and in the arrangement of the several parts,within the scope of the claims, without departing from the spirit ofthis invention.

What is claimed as new is 1. A cleanin apparatus nozzle rovided with anarrow mlet slot adapted to closed by the surface to be cleaned, saidnozzle having a discharge outlet, an air passage in the nozzle having aninlet 0 ning adjacent one end of the nozzle, sai passage havin acontinuous discharge narrow outlet 0 1 adjacent and extendin along theside 0 said slot, the upper we of the said i inclining downwardly from apoint adjacent the inlet being constantly open thereof to a point inclose proximity to the opposite end of the nozzle,the inlet of saidpassage opening to the outside air.

2. A cleaning apparatus nozzle provided with a narrow inlet slot adaptedto be closed by the surface to be cleaned, said nozzle having adischarge outlet, an air passage in the nozzle having an ir inletopening, said passage having a continuous discharge narrow outletopening adjacent and extending along the side of said slot, the upperwall of the passage inclining downwardly from a point adjacent the inletopening thereof to a point in roximity to the end'of the nozzle, the outet of said inlet slot and the inlet of said passage being offset fromeach other in directions lengthwise of the nozzle, the inlet of the saidpassage being constantly open to the atmosphere.

3. A cleaning apparatus nozzle provided with a narrow inlet slot adaptedto be closed by the surface to be cleaned, said nozzle hav ing adischarge outlet, and means for supplying counter currents of outsideair to the surface adjacent the said inlet slot, and in directionslengthwise of the said nozzle.

4. A cleaning apparatus nozzle rovided with a narrow inlet slot adaptedto e closed by the surface to be cleaned, said nozzle having a dischargeoutlet, and means for supplying counter currents of fluid to the surfaceadjacent the said inlet slot, and in directions lengthwise of the saidnozzle.

5. A cleaning apparatus nozzle provided with a narrow inlet slot adaptedto be closed by the surface to be cleaned, said nozzle having adischarge outlet, and means for sup plying counter currents of outsideair to the surface adjacent the said inlet slot, and in directions lenhwise of the said nozzle, the said means em odyin'g air passagesarranged adjacent the lateral edges of the said inlet slot, saidpassages havlng inlets individual thereto and open to the atmosphere.

6. A cleaning apparatus nozzle rovided with a narrow inlet slot adaptedto he closed by the surface to be cleaned, said nozzle having adischarge outlet, and means for so plying counter currents of outsideair to t e surface adjacent the said inlet slot, and in directionsengthwise of the said nozzle the said means embodying alr passagesarranged adjacent the lateral edges of the said inlet slot and being 0 nto the atmosphere, the inlets of the sai air passages being offset withrespect to each other in directions lengthwise of the nozzle.

7. A cleaning apparatus nozzle provided with a narrow inlet slot adaptedto be closed by the surface to be cleaned, said nozzle having adischarge outlet, and means for supplying counter currents of outsideair to the surface adjacent the said inlet slot, the said meansembodying air passa s arranged adjacent the lateral edges of t c saidinlet slot and having inlets individual thereto and open to theatmosphere, the inlets of the said air passages and the said dischargeoutlet being ofi'set from each other in directions lengthwise of thenozzle.

8. A cleanin apparatus nozzle rovided with a narrow inlet slot adaptedto e closed by the surface to be cleaned, said nozzle having a dischargeoutlet, and means for supplying oounter currents of atmospheric air tothe surface adjacent the said inlet slot, the said means embodying airpassages arranged adjaoent the lateral edges of the said inlet slot andbeing open to the atmosphere, said discharge outlet and the inlets ofthe said passages being offset from each other in directions len hwiseof the nozzle, and the inlets of the said passages being also offsetfrom each other in directions lengthwise of the nozzle.

9. A cleaning apparatus nozzle rovided with a narrow inlet slot adaptedto he closed by the surface to be cleaned, said nozzle having adischarge outlet, an air passage in the nozzle and discharging on eachside of and towards the inlet slot, each of the air passages having aninlet opening adjacent one end of the nozzle and open to the atmosphere,the upper walls of the respective air passages inclining downwardly fromthe respective inlets to the opposite ends of the nozzle and in oppositedirections, the said inlets of the air passages being offset from eachother and with respect to the said discharge outlet in directionslengthwise of the nozzle.

In testimony whereof I have signed my name to this specification on this27th day of October, A. D. 1921.

WILLIAM W. FARNSWORTH.

Certificate of Correction.

It is horebieeqtified am in Leiters Patent No. 1,468,467, granted s'etember 18, 1923, upon 1; e application of William W.,Farnsworth, ofChicago, llinois, for an improvement m 5 Cleaning Apparatus, errors apear in the printed Specification reqniringeormction as follows: Page 3,line 1,'c' aim l, for the words being constantly open. road opening, andline 4, for the word opening read being constant] open; and that thesnid Letters Potent shouldrberead with these cordrogiona erein thattheseme may .conform to the recogd of the case in the Patent ca. 1 TSigned 1nd healed this lfith dny of OctoBer, A. D., 1923. 0 [my] WM. A.KINNAM Acting of Patents.

